A corpora



J. W. RITTMAN El AL March 20, 1928. Dumm-ATER Re, 16,908

original Filed July 28, 1923 Edf.

/f |I 1| H /6 H a A 6 /4 'e' y z f a, f5 f vl [@m 3 il /a J `Reimed Mar. 2o, 192s.

`UNITED STATES PATENT OFFICE.

JOHN W. ItI'rriiIaN, JOIINHROOD, AND WILLIAM' DRIVER, or RACINE, WISCONSIN, .is.

sICNoEs To BELLE CITY ELECTRIC COMPANY, OE RACINE, WISCONSIN, A CORPORA-` TION 0F WISCONSIN.

DRINK HEATER.

originar No; 1,567,679, dated December 29, 1925, serial No. 654,371, iiiea July as, i923. Application for f .reissue filed June 25, 1927. seriai No. 201,54a`

` This invention relates to drink heaters.

`Heaters have heretofore been made or heating a single drink during-the mixing Operation, as for instance wlienitis mixed by motor driven beater or mixer;v However, i these heaters have heretofore been made inte-v gral with the beverage ormixingcup, and ithas an `uiisanitary condition frequently obtains, as `it is not expedient to submerge the heater and thoroughly wash it.

` YThis invention is designedl to overcome the above noted detects, and objectsot' such ventionare Ito provide a heater tor the mixing cup usually employed in making indi-..

vidual drinks,`which is detached and separate from the cup thus permittingthe cup to be freely and thoroughly cleaned, which is adapted to cooperate with any number ot cups,

mal transmission takes place between'the mixing cup and the heater, and which is so A constructed that it releasably retains the cup so that it is not necessary to handle the hot cup in serving the drink.

An embodiment of the invention is shown in the accompanying drawings, in which Figure 1- is a side elevation of the heater with the cup in position, parts being broken away for clearness, and showing the mixing beater in position.

Figure 2 is a sectional view approximately on the line 2-2 ot' Figure 1.

The heater lcomprises a cylindrical member having an outer wall, 1, and a conical .1nner wall 2. Between these walls the heating element 3 is positioned and 'is connected to a suitable source of energy by means of the cable 4. A lining 5 having insulating properties may be positioned upon Ithe outer s ide of the heater to prevent excessive radiation towards'the Outer side of the heater element and to concentrate the heat upon the inner wall 2. The heater is provided with a manipulating handle 6 through which the cable 4. is assed and, if desired, a switch 7 may be carried bv the cable adjacent the handle.'` A small bel crank lever pivotally joined to lugs 8 is carried by the outer wall of the heater and has an outwardly proyec-ting ortion 9 provided with a thumb piece 10. gt has an upwardly projecting curved porbeen diticultito avoid short circuits' due to laccumulation of moisture wit-hin the heater ori itsassociated parts, and due tothis which is so designed thatgoodtliertion 1l which is provided with a cam shaped latch end 12. A spring 13 `urges the. bell crank lever or latch in a counter clockwise direction. i 1 Theupper portion of the-heater may be provided with an ornamental and reinforcing bead 14. The lower portion ofthe heater.l

is closed by a removably positioned'annularly flanged lmember l17 which has. afdrive tit between the inner and Outer. walls `and seals the space within whichtlie heater element 3 is lo`cated. This removableportion facili--` tates repair or replacement of the heatingy element and avoids the necessity ot'throw-` ing away the entire heater when the heating element burns out.

age cups or mixing cups 15.' These cups are preferably of metal and are conical and accurately fit the conical inner wall 2 of the heater. They are providedwith albead 16 the latch 12 catches. v i i In using the apparatus, a clean mixing cup 15 is inserted `within the heater and the entire device is' slipped into place between the usual grip arms 18 oi the mixer. The current is turned on and the mixing isv etlected thus vforming and heating the drink simultaneously. After thel drink has been` prepared, the cup andh'eater -niay .be liftedl as a ,unit by the handle 6 without necessitating the operators handling the heating cup 15. The drink may be poured from the cup by tilting the heater and cup without danger of the cup falling from the lieat'r. After the drink has been poured from the cup, obviously the cup may he readily detached from the heater by depressing the thumb piece 10 and a clean cup may be reinserted.

Although the heater has been described as cylindrical in general contour, vit is to be understood that the term cylindrical is intended to cover .strictly cylindrical shapes, oval shapes, conical shapes and other obvious variations of this order. l

It will be seen, therefore, that. a heater has been provided orheating drinks which may be easily kept in a clean condition, which. is

vnot subject to short circuits due to wetting v7() This heater is designed to receive beven.

f approximately centrally thereof over which been described in considerable detail, it is` clely -fit andrcontact with a removable conformably `conoidal cup, an electric` heating element around the inner wall for heating the cu vand its contents, an outer cylindrical wa'l] movab e `ring closingthe space between the lower ends of lthe inner and outer walls.

I2. AY portable drink heaterfcomprising an inner ,vertically extending i wall conoidal throughout; substantially its entire lheight and yadapted to receive .from above and closely tit and contacty with a removab'le conformably conoidal cup, an electric. heating lelement around the inner wall for heat-ing the cup and its contents, an outer cylindrical wall fixedly connected at its upper end! to the upper end of the inner wall, and a. ring closing the space between the lower ends of the inner and youterV wall, said ring having downwardly extending. Hanges fitting against the lower ends of said walls.

3. yIn a portableV drink heater, the combination with an inner downwardly convergent conoidal Wall, an electric heating element around the inner wall, an outer wall fixed to the inner Wall and around the heating element, and a handle on the outer wall, of a cup having a lower conoidal portion and conforming to and contacting `with the innery n us described the invention, what xediy connected at its upper end -toy lthe uplper end ofthe inner wall, and. aV reelement located between said walls, an out-- Wardly projecting handle carried by said body portion, and a spring pressed bell crank shaped detent pivoted to said body portion and having one arm adapted to engage a cup and having a thumb iece vpositioned above the inner end of sai handle.

5. A `portable drink heater comprising an inner vertically. extending wall adapted tol receive and closely fit with a. removable cup, an electric heating element around the inner wall for heating the cup and itscontents, an outer wall fixedly connected to the inner wall, and readily releasable means carried by the outer wall for locking the cup and heater together. i i y 6. A portable heater for a cup having at its upper end means yforming a shoulder, comprising an inner vertically extending wall adapted to receive and closely itl with the cup, an electric heating element around said inner wall for heating the cup and its contents, kan outer cylindrical wall fixed to the inner wall and extending around the `heating element, and means carried by said outer wall and engageable with the shoulder on thel cup for locking the cup and heater together.

. JOHN w. RITTMAN. JOHN Roon. y WILLIAM DRIVER. 

